Chapter 3. Getting into the Details of Variables

Initially, computer programming appears difficult to beginners due to the way in which words are used in code. It's not the actual words that cause the problem because, for most of the part, many of the words are the same as those we use in our everyday life. C# is not a foreign language. The main problem is that the words simply don't read like typical sentences that we are all used to. You know how to say words and how to spell words. What you don't know is where and why you need to put them in that crazy-looking grammar, that is, the syntax that makes up a C# statement.

In this chapter, you will learn some of the basic rules to write a C# statement. We will also introduce many of the words that C# uses and the proper placement of these words in C# statements when we create our variables.

In this chapter, we will cover the following topics:

  • Writing C# statements properly
  • Using C# syntax to write variable statements
  • The GameObject component's properties
  • Using public variables for the Unity Inspector panel
  • Naming a variable properly
  • Declaring a variable for the type of data it will store

Writing C# statements properly

When you do normal writing, it's in the form of a sentence, with a period used to end the sentence. When you write a line of code, it's called a statement, with a semicolon used to end the statement.

Note

The reason a statement ends with a semicolon is so that Unity knows when the statement ends. A period can't be used because it is used in the dot syntax.

The code for a C# statement does not have to be on a single line as shown in the following example:

public int number1 = 2;

The statement can be on several lines. Whitespace and carriage returns are ignored, so, if you really want to, you can write it as follows:

public
int
number1
=
2;

However, I do not recommend writing your code like this because it's terrible to read code that is formatted like the preceding code. Nevertheless, there will be times when you'll have to write long statements—longer than one line. Unity won't care. It just needs to see the semicolon at the end.

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